The present dissertation s objective was to identify and analyze coparent related and predictable variables of brazilian mothers and fathers in the COVID19 pandemic context. One theoric study and two empirical studies were conducted to fulfill this objective. The theoric article aimed to discuss the relation between the coparent related variables through the lens of Bioecological Human Development Model in pandemic context. The first empirical article showed the adaptation process and the initial validity proofs of the Coparenting Questionnaire (CQ) for brazilian context, in which 590 mothers and fathers participated, majoritarily women (n = 532; 90,02 percent). Instrument s adaptation for Portuguese language was made in five steps. After confirmatory factor analysis, the instrument adjusted indices were satisfactory for the proposed multifactor model. It was also identified by a bifactor analysis that a total score of the instrument can be used with wariness. The second empirical article s objective was to identify, from correlation, mean differences and multiple regression analysis, the biopsychosocial variables that were related with coparenting in a pandemic context. 300 mothers and fathers, married or enrolled in stable unions, participated in this study, majoritarily women (n = 277; 92,33 percent). Several variables presented correlation with coparenting and conjugal relationship satisfaction was the variable with the highest predictive load. Some pandemic contextual variables showed significant differences in means regarding coparenting, in which the strongest was the increase in children s behavioral problems. The general data from this study suggest that coparenting is a complex and multidetermined construct, supporting literature studies on its multiple biopsychosocial predictors. The present research provides a new coparenting instrument for research use, in addition to help understanding how this construct presented itself on Brazilian families during the pandemic vulnerability period. Finally, it also contributes to future directions for empirical studies on coparenting in other contexts and with other populations, in addition to providing information on interventions focused on mitigating the negative effects of the pandemic on families.